RELEASE-NOTES-1.26

   1 Security reminder: If you have PHP's register_globals option set, you must
   2 turn it off. MediaWiki will not work with it enabled.
   3
   4 == MediaWiki 1.26 ==
   5
   6 THIS IS NOT A RELEASE YET
   7
   8 MediaWiki 1.26 is an alpha-quality branch and is not recommended for use in
   9 production.
  10
  11 === Configuration changes in 1.26 ===
  12 * $wgPasswordResetRoutes['email'] = true by default.
  13 * $wgEnableParserCache was deprecated, set $wgParserCacheType to CACHE_NONE
  14   instead if you want to disable the parser cache.
  15 * New-style continuation is now the default for API action=continue. Clients may
  16   use the 'rawcontinue' parameter to receive raw query-continue data, but the
  17   new style is encouraged as it's harder to implement incorrectly.
  18 * Deprecated API formats dump and wddx have been completely removed.
  19
  20 === New features in 1.26 ===
  21 * (T51506) Now action=info gives estimates of actual watchers for a page.
  22   See $wgRCMaxAge, $wgWatchersMaxAge and $wgUnwatchedPageSecret
  23   to learn how to configure if needed.
  24 * Change tags can now be hidden in the interface by disabling the associated
  25   "tag-<id>" interface message.
  26 * ':' (colon) is now invalid in usernames for new accounts. Existing accounts
  27   are not affected.
  28 * Added a new hook, 'LogException', to log exceptions in nonstandard ways.
  29 * Revive the 'SpecialSearchResultsAppend' hook which occurs after the list of
  30   search results are rendered. The initial use case is to append a "give us
  31   feedback" link beneath the search results.
  32 * Added a new hook, 'RejectParserCacheValue', which allows extensions to
  33   reject an otherwise-successful parser cache lookup. The intent is to allow
  34   extensions to manage the eviction of archaic HTML output from the cache.
  35 * (T68699) The expiration of the UserID and Token login cookies
  36   ($wgExtendedLoginCookieExpiration) can be configured independently of the
  37   expiration of all other cookies ($wgCookieExpiration).
  38 * (T50519) Support for generating JPEG/PNG thumbnails from WebP images added
  39   if ImageMagick is used as image scaler ($wgUseImageMagick = true). Uploading
  40   of WebP images still disabled by default. Add $wgFileExtensions[] =
  41   'webp'; to LocalSettings.php to enable uploading of WebP images.
  42 * Added new hooks 'EnhancedChangesListModifyLineData' &
  43   'EnhancedChangesListModifyBlockLineData', to modify the data used to build
  44   lines in enhanced recentchanges and watchlist.
  45
  46 ==== External libraries ====
  47 * Update es5-shim from v4.0.0 to v4.1.5.
  48 * Update json2 from revision 2014-02-04 to 2015-05-03.
  49 * Update Sinon.JS from 1.10.3 to 1.15.4.
  50 * Upgrade jQuery Client from v1.0.0 to v2.0.0.
  51 * Added mediawiki/at-ease 1.0.0.
  52 * Update QUnit from v1.17.1 to v1.18.0.
  53
  54 === Bug fixes in 1.26 ===
  55 * (T53283) load.php sometimes sends 304 response without full headers
  56 * (T65198) Talk page tabs now have a "rel=discussion" attribute
  57
  58 === Action API changes in 1.26 ===
  59 * New-style continuation is now the default for action=continue. Clients may
  60   use the 'rawcontinue' parameter to receive raw query-continue data, but the
  61   new style is encouraged as it's harder to implement incorrectly.
  62 * Deprecated API formats dump and wddx have been completely removed.
  63 * API action=query&list=tags: The displayname can now be boolean false if the
  64   tag is meant to be hidden from user interfaces.
  65 * action=import no longer allows both the namespace= and rootpage= parameters
  66   to be set. If they are both set, the value of rootpage= will be ignored.
  67 * prop=revision output in enum mode is now sorted by timestamp rather than
  68   revision ID. This usually won't make any difference.
  69 * (T102645) Namespace list from meta=siteinfo&siprop=namespaces is now an array
  70   with formatversion=2.
  71 * Various other output from meta=siteinfo will now always be arrays instead of
  72   sometimes being numerically-indexed objects with formatversion=2.
  73 * When errors about users being blocked are returned, they now include
  74   information about the relevant block.
  75
  76 === Action API internal changes in 1.26 ===
  77
  78 === Languages updated in 1.26 ===
  79
  80 MediaWiki supports over 350 languages. Many localisations are updated
  81 regularly. Below only new and removed languages are listed, as well as
  82 changes to languages because of Phabricator reports.
  83
  84 * Languages added:
  85 ** dty (डोटेली/Doteli), thanks to translators जनक राज भट्ट, बिप्लब आनन्द,
  86    मेश सिंह बोहरा, and राम प्रसाद जोशी
  87 ** luz (لئری جئنوٙڤی / Southern Luri)
  88
  89 === Other changes in 1.26 ===
  90 * ChangeTags::tagDescription() will return false if the interface message
  91   for the tag is disabled.
  92 * Added PageHistoryPager::doBatchLookups hook.
  93 * Added ParserCacheSaveComplete to ParserCache
  94 * supportsDirectEditing and supportsDirectApiEditing methods added to
  95   ContentHandler, to provide a way for ApiEditPage and EditPage to check
  96   if direct editing of content is allowed. These methods return false,
  97   by default for the ContentHandler base class and true for TextContentHandler
  98   and it's derivative classes (everything in core). For Content types that
  99   do not support direct editing, an alternative mechanism should be provided
 100   for editing, such as action overrides or specific api modules.
 101 * mediaWiki.confirmCloseWindow now returns an object of functions, instead of
 102   one function. The callback can't be called directly any more. The callback
 103   function is replaced with confirmCloseWindow.release().
 104 * BREAKING CHANGE: Added an optional ResouceLoaderContext parameter to
 105   ResourceLoaderModule::getDependencies(). Extension classes that override that
 106   method should be updated. If they aren't updated, PHP Strict standards
 107   warnings will appear when E_STRICT error reporting is enabled. Note: in the
 108   near future, this parameter will probably become non-optional.
 109 * Removed maintenance script deleteImageMemcached.php.
 110 * MWFunction::newObj() was removed (deprecated in 1.25).
 111   ObjectFactory::getObjectFromSpec() should be used instead.
 112 * The parser will no longer randomize the string it uses to mark the place of
 113   items that were stripped during parsing. It will use a fixed string instead.
 114   This causes the parser to re-use the regular expressions it uses to search
 115   and replace markers rather than generate novel expressions on each parse.
 116   Re-using regular expressions will improve performance on HHVM and the
 117   forthcoming PHP 7. The interfaces changes accompanying this change are:
 118   - Parser::getRandomString() and Parser::uniqPrefix() have been deprecated.
 119   - The $uniq_prefix argument for Parser::extractTagsAndParams() and the
 120     $prefix argument for StripState::_construct() are deprecated and their
 121     value is ignored.
 122 * wfSuppressWarnings() and wfRestoreWarnings() were split into a separate library,
 123   mediawiki/at-ease, and are now deprecated. Callers should use
 124   MediaWiki\suppressWarnings() and MediaWiki\restoreWarnings() directly.
 125 * The Block class constructor now takes an associative array of parameters
 126   instead of many optional positional arguments. Calling the constructor the old
 127   way will issue a deprecation warning.
 128 * The jquery.mwExtension module was deprecated.
 129 * $wgSpecialPageGroups was removed (deprecated in 1.21).
 130 * SpecialPageFactory::setGroup was removed (deprecated in 1.21).
 131 * SpecialPageFactory::getGroup was removed (deprecated in 1.21).
 132 * DatabaseBase::ignoreErrors() is now protected.
 133
 134 == Compatibility ==
 135
 136 MediaWiki 1.26 requires PHP 5.3.3 or later. There is experimental support for
 137 HHVM 3.3.0.
 138
 139 MySQL is the recommended DBMS. PostgreSQL or SQLite can also be used, but
 140 support for them is somewhat less mature. There is experimental support for
 141 Oracle and Microsoft SQL Server.
 142
 143 The supported versions are:
 144
 145 * MySQL 5.0.3 or later
 146 * PostgreSQL 8.3 or later
 147 * SQLite 3.3.7 or later
 148 * Oracle 9.0.1 or later
 149 * Microsoft SQL Server 2005 (9.00.1399)
 150
 151 == Upgrading ==
 152
 153 1.26 has several database changes since 1.25, and will not work without schema
 154 updates. Note that due to changes to some very large tables like the revision
 155 table, the schema update may take quite long (minutes on a medium sized site,
 156 many hours on a large site).
 157
 158 If upgrading from before 1.11, and you are using a wiki as a commons
 159 repository, make sure that it is updated as well. Otherwise, errors may arise
 160 due to database schema changes.
 161
 162 If upgrading from before 1.7, you may want to run refreshLinks.php to ensure
 163 new database fields are filled with data.
 164
 165 If you are upgrading from MediaWiki 1.4.x or earlier, you should upgrade to
 166 1.5 first. The upgrade script maintenance/upgrade1_5.php has been removed
 167 with MediaWiki 1.21.
 168
 169 Don't forget to always back up your database before upgrading!
 170
 171 See the file UPGRADE for more detailed upgrade instructions.
 172
 173 For notes on 1.25.x and older releases, see HISTORY.
 174
 175 == Online documentation ==
 176
 177 Documentation for both end-users and site administrators is available on
 178 MediaWiki.org, and is covered under the GNU Free Documentation License (except
 179 for pages that explicitly state that their contents are in the public domain):
 180
 181         https://www.mediawiki.org/wiki/Documentation
 182
 183 == Mailing list ==
 184
 185 A mailing list is available for MediaWiki user support and discussion:
 186
 187         https://lists.wikimedia.org/mailman/listinfo/mediawiki-l
 188
 189 A low-traffic announcements-only list is also available:
 190
 191         https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce
 192
 193 It's highly recommended that you sign up for one of these lists if you're
 194 going to run a public MediaWiki, so you can be notified of security fixes.
 195
 196 == IRC help ==
 197
 198 There's usually someone online in #mediawiki on irc.freenode.net.